title: Feasibility of innovative dietary assessment in epidemiological studies using the approach of combining different assessment instruments.
abstract: OBJECTIVE
  To assess the feasibility of combining short-term and long-term dietary assessment instruments as new concept for improving usual dietary intake assessment on the individual level.
  
  
  METHODS
  Feasibility study of completing three 24 h dietary recalls (24-HDR) and a self-administered food propensity questionnaire (FPQ). The 24-HDR was conducted by monthly telephone interviews, using EPIC-SOFT software. The FPQ was completely standardized across cohorts and offered either as a web-based tool or in paper format.
  
  
  METHODS
  Random sample derived from five ongoing European cohort studies (EPIC-San Sebastian, EPIC-Florence, EPIC-Potsdam, Estonia Genome Center (EGC) and Norwegian Women and Cancer study (NOWAC)).
  
  
  METHODS
  A total of 400 participants.
  
  
  RESULTS
  Overall, the total participation rate for the present study was 65.3 % (n 261). On average, completion of the 24-HDR was highest for the first 24-HDR (63.0 %) and decreased slightly for the second (60.3 %) and third 24-HDR (56.3 %). The proportions of selecting the web-based FPQ varied among the study centres, with the highest in EGC (92.9 %) and NOWAC (70.0 %) and the lowest in EPIC-San Sebastian (25.5 %) and EPIC-Potsdam (33.9 %). Web users rarely requested support and were younger and more highly educated than those who completed the paper format.
  
  
  CONCLUSIONS
  The present study supports the feasibility of a combined application of three 24-HDR and an FPQ in culturally different populations. The varying acceptance of the web-based instrument across populations requires a flexible application of assessment instruments.
authors.affiliation: Department of Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany. anne-kathrin.illner@dife.de
authors.forename: Anne-Kathrin
authors.initials: AK
authors.lastname: Illner
authors.forename: Ulrich
authors.initials: U
authors.lastname: Harttig
authors.forename: Gianluca
authors.initials: G
authors.lastname: Tognon
authors.forename: Domenico
authors.initials: D
authors.lastname: Palli
authors.forename: Simonetta
authors.initials: S
authors.lastname: Salvini
authors.forename: Eugenia
authors.initials: E
authors.lastname: Bower
authors.forename: Pilar
authors.initials: P
authors.lastname: Amiano
authors.forename: Taie
authors.initials: T
authors.lastname: Kassik
authors.forename: Andres
authors.initials: A
authors.lastname: Metspalu
authors.forename: Dagrun
authors.initials: D
authors.lastname: Engeset
authors.forename: Eiliv
authors.initials: E
authors.lastname: Lund
authors.forename: Heather
authors.initials: H
authors.lastname: Ward
authors.forename: Nadia
authors.initials: N
authors.lastname: Slimani
authors.forename: Manuela
authors.initials: M
authors.lastname: Bergmann
authors.forename: Karen
authors.initials: K
authors.lastname: Wagner
authors.forename: Heiner
authors.initials: H
authors.lastname: Boeing
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015331:Cohort Studies; D004034:Diet Surveys / Q000379:methods*; D005060:Europe; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D020407:Internet; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D015596:Nutrition Assessment; D010865:Pilot Projects; D012646:Self Administration; D011795:Surveys and Questionnaires; D055815:Young Adult